1 /* $NetBSD: dprintf.c,v 1.2 2013/03/05 16:29:09 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2013 NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifdef HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #if !HAVE_DPRINTF
37 #include <stdlib.h>
38 #ifndef HAVE_NBTOOL_CONFIG_H
39 /* These headers are required, but included from nbtool_config.h */
40 #include <stdio.h>
41 #include <stdarg.h>
42 #include <unistd.h>
43 #endif
44
45 int
dprintf(int fd,const char * fmt,...)46 dprintf(int fd, const char *fmt, ...)
47 {
48 FILE *fp;
49 int e;
50 va_list ap;
51
52 if ((e = dup(fd)) == -1)
53 return -1;
54
55 if ((fp = fdopen(e, "r+")) == NULL) {
56 (void)close(e);
57 return -1;
58 }
59
60 va_start(ap, fmt);
61 e = vfprintf(fp, fmt, ap);
62 va_end(ap);
63
64 (void)fclose(fp);
65 return e;
66 }
67
68 #endif /* HAVE_DPRINTF */
69
70 #ifdef TEST
71 int
main(int argc,char * argv[])72 main(int argc, char *argv[])
73 {
74 dprintf(1, "Hello %s\n", "world");
75 return 0;
76 }
77 #endif
78